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40 Cards in this Set
- Front
- Back
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The lymphatic system is composed of all of the following except |
b. thyroid gland
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The primary function of the lymphatic system is
a. circulation of nutrients b. transport of hormones c. the production, maintenance, and distribution of lymphocytes d. the production, maintenance, and distribution of plasma proteins |
c. the production, maintenance, and distribution of lymphocytes
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Compared to blood capillaries, lymph capillaries exhibit all of the following, except they
a. have no basement membrane b. are larger in diameter c. have walls of endothelial cells that overlap like shingles d. are not held in place by a loose connective tissue framework |
d. are not held in place by a loose connective tissue framework
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Anatomically, lymph vessels resemble
a. elastic arteries b. muscular arteries c. arterioles d. medium-sized veins |
d. medium-sized veins |
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Most of the lymph returns to the venous circulation by way of the
a. right lymphatic duct b. thoracic duct c. cysterna chyli d. hepatic portal vein |
b. thoracic duct
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The thoracic duct drains lymph from all of the following regions except the
a. left side of the head b. upper lobe of the right lung c. left arm and shoulder d. right foot |
b. upper lobe of the right lung
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Lymph nodes do all of the following except
a. produce antibodies b. monitor the contents of lymph c. remove debris and pathogens from the lymph d. remove excess nutrients from the lymph |
d. remove excess nutrients from the lymph
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All of the following are true about the thymus gland except that it
a. activates B cells b. reaches it greatest size relative to body size during the first to second year of life c. produces T cells d. lies behind the sternum in the anterior mediastinum |
a. activates B cells
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The cells known as lymphocytes
a. are actively phagocytic b. destroy red blood cells c. produce proteins called antibodies d. are primarily found in red bone marrow |
c. produce proteins called antibodies
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Lymphocytes are located in each of the following tissues or organs except the
a. tonsils b. spleen c. lymph nodes d. brain |
d. brain
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________ are large lymphatic nodules that are located in the walls of the pharynx.
a. Tonsils b. Peyer's patches c. Lymph nodes d. Immune complexes |
a. Tonsils
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__________ are clusters of lymphatic nodules located beneath the epithelial lining of the small intestine.
a. Tonsils b. Peyer's patches c. Lymph nodes d. Immune complexes |
b. Peyer's patches
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The red pulp of the spleen contains large numbers of
a. red blood cells b. eosinophils c. lymphocytes d. antibodies |
a. red blood cells
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The white pulp of the spleen contains large numbers of
a. red blood cells b. macrophages c. lymphocytes d. antibodies |
c. lymphocytes
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The body's nonspecific defenses include all of the following, except
a. the skin b. complement c. inflammation d. antibodies |
d. antibodies
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An inflammatory response is triggered when
a. red blood cells release pyrogens b. T cells release interferon c. mast cells release histamine, serotonin, and heparin d. blood flow to an area increases |
c. mast cells release histamine, serotonin, and heparin
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Characteristics of specific defenses include
a. specificity b. tolerance c. memory d. all of the above |
d. all of the above
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Defense of the body against a particular bacteria or virus is provided by
a. nonspecific immunity b. specific immunity c. immunological surveillance d. fever |
b. specific immunity
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The first line of cellular defense against pathogens are the
a. T cells b. B cells c. NK cells d. neutrophils and macrophages |
d. neutrophils and macrophages
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Immunity that is genetically determined and present at birth is called ________ immunity.
a. active b. natural passive c. auto d. innate |
d. innate
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Immunity that results from antibodies that pass the placenta from mother to fetus is called _______ immunity.
a. active b. natural passive c. passive d. innate |
b. natural passive
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In active immunization the
a. immune system attacks normal body cells b. body is deliberately exposed to an antigen c. body receives antibodies produced by another person d. genes for antibodies are introduced into the body |
b. body is deliberately exposed to an antigen
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The cells responsible for the production of circulating antibodies are _______ cells.
a. NK b. plasma c. helper T d. cytotoxic T |
b. plasma
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The cells responsible for cellular immunity are the ______ cells.
a. B b. plasma c. cytotoxic T d. suppressor T |
c. cytotoxic T
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The cells responsible for humoral immunity are the ______ cells.
a. B b. helper T c. cytotoxic T d. suppressor T |
a. B
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Stem cells that will form B cells and NK cells are found in the
a. bone marrow b. liver c. spleen d. thymus |
a. bone marrow
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Lymphocytes that attack foreign cells or body cells infected with viruses are ________ cells.
a. B b. plasma c. helper T d. cytotoxic T |
d. cytotoxic T
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Cells that help to regulate the immune response are __________ cells.
a. B b. plasma c. helper T d. cytotoxic T |
c. helper T
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Suppressor T cells act to
a. suppress antigens b. limit the degree of memory in memory T cells c. limit antigen proliferation d. depress the responses of other T cells and B cells |
d. depress the responses of other T cells and B cells
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The cells that are actively involved in immunological surveillance are the _______ cells.
a. NK b. plasma c. B d. helper T |
a. NK
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Stem cells that will form T cells are modified in the
a. bone marrow b. liver c. spleen d. thymus |
d. thymus
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Immunoglobulins that attach to mast cells and basophils and are involved in allergic reactions are
a. IgA b. IgD c. IgE d. IgG |
c. IgE
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The specificity of an antibody is determined by the
a. fixed segment b. antigenic determinants c. variable region d. size of the antibody |
c. variable region
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The binding of an antibody to an antigen can result in
a. neutralization of the antigen b. agglutination or precipitation c. complement activation and opsonization d. all of the above |
d. all of the above
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When an antigen is bound to a Class I HLA molecule, it can stimulate a ______ cell.
a. B b. helper T c. cytotoxic T d. NK |
c. cytotoxic T
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Class II HLA molecules are found only attached to which of the following?
a. all body cells with a nucleus b. red blood cells c. granulocytes and microphages d. lymphocytes and macrophages |
d. lymphocytes and macrophages
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When an antigen is bound to a Class II HLA molecule, it can stimulate a ________ cell.
a. plasma b. helper T c. NK d. cytotoxic T |
b. helper T
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B cells are primarily activated by the activities of
a. antigens b. antibodies c. helper T cells d. macrophages |
c. helper T cells
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All of the following are true of the secondary response of humoral immunity, except that it
a. involves memory B cells b. generally prevents a person from showing symptoms of the disease c. promotes an increased susceptibility to immune system failure d. can occur even if the second exposure occurs years after the initial exposure |
c. promotes an increased susceptibility to immune system failure
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Newborn infants gain most of their immunity from
a. early immunizations b. contact with viruses and bacteria c. antibodies passed from the mother across the placenta d. contact with siblings |
c. antibodies passed from the mother across the placenta
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